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12/31/2009
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12/31/2010
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12/31/2009
USD ($)
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12/31/2010
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12/31/2009
USD ($)
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12/31/2009
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12/31/2010
USD ($)
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12/31/2009
USD ($)
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12/31/2010
USD ($)
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12/31/2009
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12/31/2010
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